<?php
    if (!defined('BASEPATH'))
        exit('No direct script access allowed');
    /**
     * CodeIgniter
     *
     * An open source application development framework for PHP 5.1.6 or newer
     *
     * @package		CodeIgniter
     * @author		ExpressionEngine Dev Team
     * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc.
     * @license		http://codeigniter.com/user_guide/license.html
     * @link		http://codeigniter.com
     * @since		Version 1.0
     * @filesource
     */
// ------------------------------------------------------------------------

    /**
     * CodeIgniter URL Helpers
     *
     * @package		CodeIgniter
     * @subpackage	Helpers
     * @category	Helpers
     * @author		ExpressionEngine Dev Team
     * @link		http://codeigniter.com/user_guide/helpers/url_helper.html
     */
// ------------------------------------------------------------------------

    /**
     * Site URL
     *
     * Create a local URL based on your basepath. Segments can be passed via the
     * first parameter either as a string or an array.
     *
     * @access	public
     * @param	string
     * @return	string
     */
    if (!function_exists('site_url'))
    {

        function site_url($uri = '')
        {
            $CI = & get_instance();
            return $CI->config->site_url($uri);
        }

    }

// ------------------------------------------------------------------------

    /**
     * Base URL
     * 
     * Create a local URL based on your basepath.
     * Segments can be passed in as a string or an array, same as site_url
     * or a URL to a file can be passed in, e.g. to an image file.
     *
     * @access	public
     * @param string
     * @return	string
     */
    if (!function_exists('base_url'))
    {

        function base_url($uri = '')
        {
            $CI = & get_instance();
            return $CI->config->base_url($uri);
        }

    }

// ------------------------------------------------------------------------

    /**
     * Current URL
     *
     * Returns the full URL (including segments) of the page where this
     * function is placed
     *
     * @access	public
     * @return	string
     */
    if (!function_exists('current_url'))
    {

        function current_url()
        {
            $CI = & get_instance();
            $current_url = $CI->config->site_url($CI->uri->uri_string());

            // BEGIN MODIFICATION
            if (isset($_GET) && !empty($_GET))
            {
                // Use your preferred method of fetching the query string
                $current_url .= '?' . http_build_query($_GET);
            }
            // END MODIFICATION

            return $current_url;
        }

    }

// ------------------------------------------------------------------------
    /**
     * URL String
     *
     * Returns the URI segments.
     *
     * @access	public
     * @return	string
     */
    if (!function_exists('uri_string'))
    {

        function uri_string()
        {
            $CI = & get_instance();
            return $CI->uri->uri_string();
        }

    }

// ------------------------------------------------------------------------

    /**
     * Index page
     *
     * Returns the "index_page" from your config file
     *
     * @access	public
     * @return	string
     */
    if (!function_exists('index_page'))
    {

        function index_page()
        {
            $CI = & get_instance();
            return $CI->config->item('index_page');
        }

    }

// ------------------------------------------------------------------------

    /**
     * Anchor Link
     *
     * Creates an anchor based on the local URL.
     *
     * @access	public
     * @param	string	the URL
     * @param	string	the link title
     * @param	mixed	any attributes
     * @return	string
     */
    if (!function_exists('anchor'))
    {

        function anchor($uri = '', $title = '', $attributes = '')
        {
            $title = (string) $title;

            if (!is_array($uri))
            {
                $site_url = (!preg_match('!^\w+://! i', $uri)) ? site_url($uri) : $uri;
            }
            else
            {
                $site_url = site_url($uri);
            }

            if ($title == '')
            {
                $title = $site_url;
            }

            if ($attributes != '')
            {
                $attributes = _parse_attributes($attributes);
            }

            return '<a href="' . $site_url . '"' . $attributes . '>' . $title . '</a>';
        }

    }

// ------------------------------------------------------------------------

    /**
     * Anchor Link - Pop-up version
     *
     * Creates an anchor based on the local URL. The link
     * opens a new window based on the attributes specified.
     *
     * @access	public
     * @param	string	the URL
     * @param	string	the link title
     * @param	mixed	any attributes
     * @return	string
     */
    if (!function_exists('anchor_popup'))
    {

        function anchor_popup($uri = '', $title = '', $attributes = FALSE)
        {
            $title = (string) $title;

            $site_url = (!preg_match('!^\w+://! i', $uri)) ? site_url($uri) : $uri;

            if ($title == '')
            {
                $title = $site_url;
            }

            if ($attributes === FALSE)
            {
                return "<a href='javascript:void(0);' onclick=\"window.open('" . $site_url . "', '_blank');\">" . $title . "</a>";
            }

            if (!is_array($attributes))
            {
                $attributes = array();
            }

            foreach (array('width' => '800', 'height' => '600', 'scrollbars' => 'yes', 'status' => 'yes', 'resizable' => 'yes', 'screenx' => '0', 'screeny' => '0',) as $key => $val)
            {
                $atts[$key] = (!isset($attributes[$key])) ? $val : $attributes[$key];
                unset($attributes[$key]);
            }

            if ($attributes != '')
            {
                $attributes = _parse_attributes($attributes);
            }

            return "<a href='javascript:void(0);' onclick=\"window.open('" . $site_url . "', '_blank', '" . _parse_attributes($atts, TRUE) . "');\"$attributes>" . $title . "</a>";
        }

    }

// ------------------------------------------------------------------------

    /**
     * Mailto Link
     *
     * @access	public
     * @param	string	the email address
     * @param	string	the link title
     * @param	mixed	any attributes
     * @return	string
     */
    if (!function_exists('mailto'))
    {

        function mailto($email, $title = '', $attributes = '')
        {
            $title = (string) $title;

            if ($title == "")
            {
                $title = $email;
            }

            $attributes = _parse_attributes($attributes);

            return '<a href="mailto:' . $email . '"' . $attributes . '>' . $title . '</a>';
        }

    }

// ------------------------------------------------------------------------

    /**
     * Encoded Mailto Link
     *
     * Create a spam-protected mailto link written in Javascript
     *
     * @access	public
     * @param	string	the email address
     * @param	string	the link title
     * @param	mixed	any attributes
     * @return	string
     */
    if (!function_exists('safe_mailto'))
    {

        function safe_mailto($email, $title = '', $attributes = '')
        {
            $title = (string) $title;

            if ($title == "")
            {
                $title = $email;
            }

            for ($i = 0; $i < 16; $i++)
            {
                $x[] = substr('<a href="mailto:', $i, 1);
            }

            for ($i = 0; $i < strlen($email); $i++)
            {
                $x[] = "|" . ord(substr($email, $i, 1));
            }

            $x[] = '"';

            if ($attributes != '')
            {
                if (is_array($attributes))
                {
                    foreach ($attributes as $key => $val)
                    {
                        $x[] = ' ' . $key . '="';
                        for ($i = 0; $i < strlen($val); $i++)
                        {
                            $x[] = "|" . ord(substr($val, $i, 1));
                        }
                        $x[] = '"';
                    }
                }
                else
                {
                    for ($i = 0; $i < strlen($attributes); $i++)
                    {
                        $x[] = substr($attributes, $i, 1);
                    }
                }
            }

            $x[] = '>';

            $temp = array();
            for ($i = 0; $i < strlen($title); $i++)
            {
                $ordinal = ord($title[$i]);

                if ($ordinal < 128)
                {
                    $x[] = "|" . $ordinal;
                }
                else
                {
                    if (count($temp) == 0)
                    {
                        $count = ($ordinal < 224) ? 2 : 3;
                    }

                    $temp[] = $ordinal;
                    if (count($temp) == $count)
                    {
                        $number = ($count == 3) ? (($temp['0'] % 16) * 4096) + (($temp['1'] % 64) * 64) + ($temp['2'] % 64) : (($temp['0'] % 32) * 64) + ($temp['1'] % 64);
                        $x[] = "|" . $number;
                        $count = 1;
                        $temp = array();
                    }
                }
            }

            $x[] = '<';
            $x[] = '/';
            $x[] = 'a';
            $x[] = '>';

            $x = array_reverse($x);
            ob_start();
            ?><script type="text/javascript">
                //<![CDATA[
                var l = new Array();
            <?php
            $i = 0;
            foreach ($x as $val)
            {
                ?>l[<?php echo $i++; ?>] = '<?php echo $val; ?>';<?php } ?>

                    for (var i = l.length - 1; i >= 0; i = i - 1) {
                        if (l[i].substring(0, 1) == '|')
                            document.write("&#" + unescape(l[i].substring(1)) + ";");
                        else
                            document.write(unescape(l[i]));
                    }
                    //]]>
            </script><?php
            $buffer = ob_get_contents();
            ob_end_clean();
            return $buffer;
        }

    }

// ------------------------------------------------------------------------

    /**
     * Auto-linker
     *
     * Automatically links URL and Email addresses.
     * Note: There's a bit of extra code here to deal with
     * URLs or emails that end in a period.  We'll strip these
     * off and add them after the link.
     *
     * @access	public
     * @param	string	the string
     * @param	string	the type: email, url, or both
     * @param	bool	whether to create pop-up links
     * @return	string
     */
    if (!function_exists('auto_link'))
    {

        function auto_link($str, $type = 'both', $popup = FALSE)
        {
            if ($type != 'email')
            {
                if (preg_match_all("#(^|\s|\()((http(s?)://)|(www\.))(\w+[^\s\)\<]+)#i", $str, $matches))
                {
                    $pop = ($popup == TRUE) ? " target=\"_blank\" " : "";

                    for ($i = 0; $i < count($matches['0']); $i++)
                    {
                        $period = '';
                        if (preg_match("|\.$|", $matches['6'][$i]))
                        {
                            $period = '.';
                            $matches['6'][$i] = substr($matches['6'][$i], 0, -1);
                        }

                        $str = str_replace($matches['0'][$i], $matches['1'][$i] . '<a href="http' .
                                $matches['4'][$i] . '://' .
                                $matches['5'][$i] .
                                $matches['6'][$i] . '"' . $pop . '>http' .
                                $matches['4'][$i] . '://' .
                                $matches['5'][$i] .
                                $matches['6'][$i] . '</a>' .
                                $period, $str);
                    }
                }
            }

            if ($type != 'url')
            {
                if (preg_match_all("/([a-zA-Z0-9_\.\-\+]+)@([a-zA-Z0-9\-]+)\.([a-zA-Z0-9\-\.]*)/i", $str, $matches))
                {
                    for ($i = 0; $i < count($matches['0']); $i++)
                    {
                        $period = '';
                        if (preg_match("|\.$|", $matches['3'][$i]))
                        {
                            $period = '.';
                            $matches['3'][$i] = substr($matches['3'][$i], 0, -1);
                        }

                        $str = str_replace($matches['0'][$i], safe_mailto($matches['1'][$i] . '@' . $matches['2'][$i] . '.' . $matches['3'][$i]) . $period, $str);
                    }
                }
            }

            return $str;
        }

    }

// ------------------------------------------------------------------------

    /**
     * Prep URL
     *
     * Simply adds the http:// part if no scheme is included
     *
     * @access	public
     * @param	string	the URL
     * @return	string
     */
    if (!function_exists('prep_url'))
    {

        function prep_url($str = '')
        {
            if ($str == 'http://' OR $str == '')
            {
                return '';
            }

            $url = parse_url($str);

            if (!$url OR !isset($url['scheme']))
            {
                $str = 'http://' . $str;
            }

            return $str;
        }

    }

// ------------------------------------------------------------------------

    /**
     * Create URL Title
     *
     * Takes a "title" string as input and creates a
     * human-friendly URL string with a "separator" string 
     * as the word separator.
     *
     * @access	public
     * @param	string	the string
     * @param	string	the separator
     * @return	string
     */
    if (!function_exists('url_title'))
    {

        function url_title($str, $separator = '-', $lowercase = FALSE)
        {
            if ($separator == 'dash')
            {
                $separator = '-';
            }
            else if ($separator == 'underscore')
            {
                $separator = '_';
            }

            $q_separator = preg_quote($separator);

            $trans = array(
                '&.+?;' => '',
                '[^a-z0-9 _-]' => '',
                '\s+' => $separator,
                '(' . $q_separator . ')+' => $separator
            );

            $str = strip_tags($str);

            foreach ($trans as $key => $val)
            {
                $str = preg_replace("#" . $key . "#i", $val, $str);
            }

            if ($lowercase === TRUE)
            {
                $str = strtolower($str);
            }

            return trim($str, $separator);
        }

    }

// ------------------------------------------------------------------------

    /**
     * Header Redirect
     *
     * Header redirect in two flavors
     * For very fine grained control over headers, you could use the Output
     * Library's set_header() function.
     *
     * @access	public
     * @param	string	the URL
     * @param	string	the method: location or redirect
     * @return	string
     */
    if (!function_exists('redirect'))
    {

        function redirect($uri = '', $method = 'location', $http_response_code = 302)
        {
            if (!preg_match('#^https?://#i', $uri))
            {
                $uri = site_url($uri);
            }

            switch ($method)
            {
                case 'refresh' : header("Refresh:0;url=" . $uri);
                    break;
                default : header("Location: " . $uri, TRUE, $http_response_code);
                    break;
            }
            exit;
        }

    }

// ------------------------------------------------------------------------

    /**
     * Parse out the attributes
     *
     * Some of the functions use this
     *
     * @access	private
     * @param	array
     * @param	bool
     * @return	string
     */
    if (!function_exists('_parse_attributes'))
    {

        function _parse_attributes($attributes, $javascript = FALSE)
        {
            if (is_string($attributes))
            {
                return ($attributes != '') ? ' ' . $attributes : '';
            }

            $att = '';
            foreach ($attributes as $key => $val)
            {
                if ($javascript == TRUE)
                {
                    $att .= $key . '=' . $val . ',';
                }
                else
                {
                    $att .= ' ' . $key . '="' . $val . '"';
                }
            }

            if ($javascript == TRUE AND $att != '')
            {
                $att = substr($att, 0, -1);
            }

            return $att;
        }

    }


/* End of file url_helper.php */
/* Location: ./system/helpers/url_helper.php */